Cosmological solutions in D = 6, N = 2 Kaluza-Klein supergravity - The Friedmann universe without fine-tuning

Details Cosmological solutions in D = 6, N = 2 Kaluza-Klein supergravity - The Friedmann universe without fine-tuning Cosmological solutions in D = 6, N = 2 Kaluza-Klein supergravity - The Friedmann universe without fine-tuning

May 1985

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1985phlb..154..358m&link_type=abstract

Physics Letters B, Volume 154, Issue 5-6, p. 358-362.

Physics

50

Scientific paper

Two families of cosmological solutions are presented in D = 6, N = 2 Kaluza-Klein supergravity theories. One family, which applies to the case that the universe is in a vacuum state, includes the (Minkowski space-time)×(constant sphere S2) solution. The case with four-dimensional radiation comprises the other family, which contains the (Friedmann universe)× (constant sphere S2) solution. All solutions in the latter family approach the Friedmann universe asymptotically. The four-dimensional cosmological constant vanishes automatically without fine-tuning in both families of solutions.

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